Definition. The 30-day change in the regional price series constructed from price movements that occur during Asian working hours, between 8am and 8pm China Standard Time (00:00-12:00 UTC).

Technical. Regional prices are constructed in a two-step process. First, price movements are assigned to regions based on working hours in the US, Europe, and Asia. Regional prices are then derived by taking the cumulative sum of the price changes over time for each region.

This is the Point-in-Time (PiT) variant of Asia Month-over-Month Price Change. PiT metrics are strictly append-only and their history is immutable. The historic data does not necessarily reflect the best current knowledge, but the information at the time when a data point was first computed. PiT metrics are ideal candidates for applications in model backtesting and related quantitative purposes. Read our article on PiT metrics for more information.